u6357785.wl036.sendgrid.net has no NS records.
NS records for this zone are defined at wl036.sendgrid.net.
NS records for this zone are defined at wl036.sendgrid.net.
Question and response
Question
dig u6357785.wl036.sendgrid.net. NS
Answer
The response has no answer records.
Authority
wl036.sendgrid.net. 1800 SOA aisha.ns.cloudflare.com. dns.cloudflare.com. 2400230291 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0